All the doors and windows are required ——— to make sure that
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All the doors and windows are required ——— to make sure that they are all locked
A checking B to check C being checked D to be checked 为什么选择D
所有的门窗都要求被检查来保证都锁了,require to be done是否可以将be提前变为 be required to be done???
打错了,将be 提前 变为 be required to do
A checking B to check C being checked D to be checked 为什么选择D
所有的门窗都要求被检查来保证都锁了,require to be done是否可以将be提前变为 be required to be done???
打错了,将be 提前 变为 be required to do
你说的前者是错误的 require 是及物动词 必须 require sb/sth to do
被动式就是sth/sb be required to do
这里 be required to be done 应该可以这么理解 因为check 是及物 所以被动式 如果这里是不及物动词 那就 be required to do 了
拙见 我其实也不太明白 原先极肯定 被你一问 也有点懵了
被动式就是sth/sb be required to do
这里 be required to be done 应该可以这么理解 因为check 是及物 所以被动式 如果这里是不及物动词 那就 be required to do 了
拙见 我其实也不太明白 原先极肯定 被你一问 也有点懵了
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